Lock Change & Replacement
If you've just moved into a flat on Leighton Road, ended a tenancy, had a break-in attempt, or simply lost track of who holds a copy of your keys, a lock change is one of the most straightforward ways to restore full control over who can enter your home. At Kentish Town Locksmiths we carry out door lock replacement London wide from our mobile workshop, arriving at your door — not the other way around — so you never have to leave your property unsecured while you wait.
Open 24 hours, 7 days a week · Fully insured
We cover Kentish Town and the surrounding NW5 area around the clock, every day of the year including bank holidays. Our trained, insured technicians can swap a worn Yale nightlatch, upgrade a standard euro cylinder to a TS007 3-star anti-snap replacement, or fit a full BS3621 5-lever mortice deadlock to satisfy your insurer — all without unnecessary damage to your door or frame. Whether you are a homeowner, a landlord managing a block of flats, or a letting agent turning around a tenancy, we confirm an exact up-front quote before any work begins.
What we do
Available 24/7
Day, night, weekends and bank holidays — a real local locksmith answers and sends a fully-stocked van.
We come straight away
Based in Kentish Town, we send a locksmith straight away — we're usually with you in about 30 minutes.
Fully insured
Vetted locksmiths, a clear price on the phone, and no surprise add-ons when we arrive.
Damage-free entry
We pick and bypass locks the right way, so most lockouts are solved without drilling anything.
Why a Lock Change Is Often the Smartest Security Decision
There are more reasons to change a lock than most people realise. A key going missing is the obvious one, but equally common triggers include completing a sale or purchase on a house in Kentish Town, a relationship breakdown, a burglary or attempted break-in, a lock that is stiff and difficult to operate, or a landlord preparing a property between tenancies. In each case, a fresh cylinder or new lock mechanism means you start from zero — with full confidence about who holds a working key. This is especially important on streets like Malden Road or around the Gospel Oak border, where terraced Victorian houses often still have the original door furniture fitted decades ago.
Many older properties in NW5 rely on a Yale-type nightlatch on the front door combined with a 5-lever mortice deadlock lower down. If either of those locks pre-dates current standards, your insurer may decline a claim after a break-in. We carry stock of BS3621-rated mortice deadlocks and TS007 3-star anti-snap euro cylinders, so a lock change service visit from us can bring your front door up to the standard your insurer actually requires — not just a cosmetic update.
Lock Change & Replacement Options: From Cylinders to Multipoint Systems
The right solution depends on the type of door you have. uPVC and composite doors — common in purpose-built flats and 1990s–2000s housing around Kentish Town — use a euro cylinder inside a multipoint locking system. The cylinder is the component most at risk from a technique called cylinder snapping, where an intruder shears the cylinder to retract the lock. Upgrading to an anti-snap, anti-pick, anti-drill cylinder (look for the TS007 3-star or Sold Secure Diamond rating) closes that vulnerability without replacing the entire door mechanism. Our door lock replacement London service covers exactly this type of upgrade, and we keep a range of sizes in the van so we can measure, cut if needed, and fit on the same visit.
Timber front doors — the kind you find on the period conversions along Kentish Town Road or the side streets off Prince of Wales Road — typically take a mortice deadlock recessed into the door edge, plus a surface-mounted nightlatch. We can replace either or both, upgrade to a British Standard mortice lock, and refit a new nightlatch with a double-cylinder option if you need key operation from inside as well. If your property has a communal entrance and a separate flat door, we treat each as a distinct job and advise on the best cylinder grade for each. For anything more complex — such as a multi-point lock on a French door at the back of the garden — we assess the mechanism on arrival and explain the options before touching anything.
House Lock Change for Landlords, Tenants and Letting Agents
Kentish Town has a large private rental sector, with everything from single-room lets to larger HMO properties managed by letting agents based locally or further into central London. For landlords, changing the locks between tenancies is not just good practice — it is the responsible minimum. It protects the incoming tenant, limits the landlord's liability, and ensures that former occupants cannot re-enter. We work regularly with letting agents and housing associations who need a fast, tidy turnaround, and we can coordinate directly with a site contact if the landlord is not on the premises.
Tenants should be aware that changing a lock without the landlord's written permission can breach a tenancy agreement, even if the reason feels urgent — such as a lost key or a concern about a former flatmate. If you are in that situation, the safest approach is to call us, explain the circumstances, and let us advise. In a genuine emergency lock change scenario — for example, if you feel unsafe — we can attend immediately, document the work, and help you communicate clearly with your landlord or agent afterwards. We answer the phone at 020 7871 7825 at any hour, including weekends and bank holidays, so you are never left waiting until Monday morning.
Emergency Lock Change London: What to Expect When You Call Us
When something goes wrong with a lock late at night — a broken key, a snapped cylinder, a door that will not close securely after a confrontation — the last thing you want is to be searching for someone who can help. As a 24 hour locksmith London service, we send a technician straight away and are usually with you in around 30 minutes, though we will always give you a realistic arrival window based on where we are when you call. We cover the full NW5 postcode district and surrounding areas, so whether you are near Kentish Town West Overground station or on the quieter residential streets towards Tufnell Park, you are within our regular patch.
On arrival, the technician will assess the door and the existing hardware, talk you through the options available from the stock in the van, and confirm the exact price before any work starts. There are no hidden charges added afterwards. The factors that determine the final quote are the type and grade of lock or cylinder required, any specialist parts needed, the time of day — evenings, weekends and bank holidays carry a different call-out charge to standard daytime hours — and the travel distance to your postcode. Once you agree the price, the work begins. In most cases a cylinder swap or a straightforward lock change is complete within the hour. Call us now on 020 7871 7825 — we answer 24/7.
Our Lock Change Services: What We Cover
To give you a clear sense of the range of work we carry out, here is a specific list of the lock change and door lock replacement jobs we handle regularly across Kentish Town and beyond. Euro cylinder replacement on uPVC front doors. Anti-snap cylinder upgrade to TS007 3-star. BS3621 5-lever mortice deadlock supply and fitting. Yale-type nightlatch replacement, including double-cylinder versions. Multipoint lock mechanism assessment and cylinder swap on composite doors. Emergency lock change following a break-in or attempted forced entry. Lock change between tenancies for landlords and letting agents. House lock change after a lost or stolen key. Lock change for a flat front door within a communal block. Lock change on a timber rear door. Lock change on uPVC French doors or patio doors. Upgrading a standard nightlatch to a higher-security rim lock. Fitting a deadlock to a door that currently has only a latch. Replacing a faulty or seized cylinder that is difficult to turn. Replacing a lock with a damaged or broken cam. Lock change London for residential properties in NW5 and surrounding postcodes. Lock change for HMO properties with multiple doors. Lock change coordination with letting agents when tenants are not present. Lock change following a domestic dispute or change of occupancy. Lock change on communal entrance doors for flat owners or freeholders. Upgrading a back door lock to meet insurance requirements. Replacing a lock on a wooden garden-flat entrance. Fitting higher-security striking plates alongside a new lock. Lock change where the existing hardware is old, corroded or non-standard. Assessment and replacement of an escutcheon or handle set where the lock cylinder has been damaged. These are all services we carry out from our mobile unit — we do not operate a shop and we come to you.
Finding the Right Locksmith London: What Actually Matters
There is no shortage of people offering a lock change service in London, and it can be difficult to know who to trust — particularly when you are under pressure after a lockout or a security scare. Rather than relying on aggregator sites or third-party directories to find a trader on your behalf, it is worth knowing directly what to look for. The most important things are straightforward: the locksmith should be insured, should give you a clear price before starting work, should be able to show you the parts they are fitting, and should be willing to explain why they are recommending a particular solution.
At Kentish Town Locksmiths, we are fully insured and our technicians are trained and experienced across the full range of residential door hardware common in this part of London. We do not subcontract calls to unknown third parties, and we do not add charges that were not agreed up front. If you need a locksmith London residents can rely on at any hour — not just during business hours — call 020 7871 7825. We are a local, mobile operation and Kentish Town is our home ground.
Frequently asked questions
Answers to what our customers ask most. Still unsure? Just call.
How do I know if my current lock meets my home insurance requirements?+
Most household insurers in the UK ask for a 5-lever mortice deadlock that meets BS3621 on the front door, or an anti-snap euro cylinder on a uPVC or composite door. If you are unsure, check your policy documents for the security requirements section, or ask your insurer directly. When we attend for a lock change, we can tell you exactly what standard the existing hardware meets and what upgrade, if any, would bring it in line with a typical insurer's requirements. We carry BS3621 mortice locks and TS007 3-star anti-snap cylinders in the van as standard.
Can a tenant request a lock change without the landlord's permission?+
In most cases, changing the lock on a rented property without the landlord's written permission will breach the tenancy agreement, even if the reason feels urgent. The best approach is to contact your landlord or letting agent first. If there is a genuine safety concern — for example, you feel at risk from a former occupant — call us on 020 7871 7825 and we can attend quickly, document the situation, and help you communicate with the landlord or managing agent afterwards. We are available around the clock, so you do not have to wait until office hours to get advice.
What determines the price of a lock change?+
The final quote depends on several factors: the type of lock or cylinder needed (a standard euro cylinder costs less than a high-security TS007 3-star replacement, for example), the number of locks being changed, any additional parts such as a new striking plate or handle, the time of day (evenings, weekends and bank holidays carry a different call-out charge to standard daytime hours), and the travel distance to your address. We confirm the exact price before any work begins, so there are no surprises on the invoice.
How quickly can you reach me in Kentish Town for an emergency lock change?+
We send a technician straight away and are usually with you in around 30 minutes, though we will give you a realistic window when you call based on current workload and location. We cover NW5 and the surrounding area every hour of every day, including bank holidays. Call us on 020 7871 7825 and we will get someone moving to you as soon as the call is answered.
Do you need to replace the whole lock, or just the cylinder?+
In many cases, only the cylinder needs to be changed — particularly on uPVC and composite doors with a multipoint system, where the cylinder is a separate, replaceable component. On timber doors with a surface-mounted nightlatch, the entire lock body is usually replaced because the mechanism and the cylinder are integrated. On a 5-lever mortice deadlock, the full lock is typically swapped out. When we arrive, we assess what you have and explain clearly what needs to change and what can stay, so you are only paying for what is genuinely necessary.
What is cylinder snapping and how does an anti-snap cylinder help?+
Cylinder snapping is a forced-entry technique where an intruder uses leverage — often a screwdriver and pair of pliers — to shear the euro cylinder at its weakest point, which retracts the lock without needing a key. It became a well-documented problem across London, particularly on uPVC and composite doors. An anti-snap cylinder is designed with a sacrificial break point positioned so that even if the outer section shears off, the inner part protecting the cam remains intact and the door stays locked. TS007 3-star cylinders combine anti-snap with anti-pick and anti-drill resistance, and are the grade most insurers recognise. We fit these as a matter of course when upgrading a cylinder.
Locked out or need a lock fixed? We are on the way.
We answer 24/7 — talk to a real local locksmith now.
020 7871 7825